Assault is when a person makes you fear that immediate violence will be used against you, or when they do use violence against you.
Common assault is when a person either assaults another person or commits a battery. Assault could be anything from shaking a fist or running a finger across a throat. No force needs to be applied in order for it to be an assault.
Battery is the application of unlawful force. This could be anything from a push or slap, to serious violence.
Actual bodily harm is when the action causes harm to the person’s body. The harm is not necessarily serious but it would need to be more than a shove which would be classed as a common assault. Harm such as bruises, scratches and bite marks are examples of actual bodily harm.
Grievous bodily harm is when the action results in the serious wounding of another person, such as being stabbed.
If you ever witness an assault taking place, you should dial 999 immediately.